Extractable lead concentrations in Scottish soils

摘要: Abstract The distribution of acetic acid-extractable lead concentration levels in 3764 samples from 751 Scottish soil profiles is reported. relation extractable to that total and some other variables also examined. Because the frequency approximately lognormal, a logarithmic transformation data has been performed provide more satisfactory means describing distribution. derived mean for full set 0.24 mg/kg normal range 0.016−3.4 mg/kg. Total was found be dominant factor determining level these soils it concluded would meaningful consider extractability (i.e., percentage by acid) rather than absolute various which are interest this connection. There evidence enhanced under conditions impeded drainage but none indicate related clay or ash content. Extractable generally higher surface horizons at depth thus reflecting pattern variation exhibited concentration. Extractability shows little with depth.